package ObjectHomeWork;

public class InteferDemo {
    public static void main(String[] args) {
        String s1="39";
        int age=Integer.parseInt(s1);
        System.out.println(age);

        String s2="147.258";
        double price=Double.parseDouble(s2);
        System.out.println(price);

        int max=Integer.MAX_VALUE;
        int min=Integer.MIN_VALUE;
        System.out.println("int的最大值为："+max+",int的最小值为:"+min);

        long max1=Long.MAX_VALUE;
        long min1=Long.MIN_VALUE;
        System.out.println("long的最大值为："+max1+",long的最小值为:"+min1);

        Integer i=5;
        int j=i;

        Integer i1=new Integer(500);
        Integer i2=new Integer(500);
        System.out.println(i1 == i2);
        System.out.println(i1.equals(i2));

        Integer i3=new Integer(5);
        Integer i4=new Integer(5);
        System.out.println(i3 ==i4);
        System.out.println(i3.equals(i4));

        System.out.println(i4);
        int i5=i4.intValue();
        System.out.println(i5);

    }
}
